What's the difference between drencher and trencher?

Drencher

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Definition:

• (n.) One who, or that which, west or steeps.
• (n.) One who administers a drench.

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Trencher

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Definition:

• (v. t.) One who trenches; esp., one who cuts or digs ditches.
• (v. t.) A large wooden plate or platter, as for table use.
• (v. t.) The table; hence, the pleasures of the table; food.

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